基于传递矩阵法给出了流场中变截面加筋柱壳结构在受集中力和声压作用下振动与声辐射的求解过程，并在确定模态截断算法有效性的基础上开展对结构振动特性的研究，分析了环板-圆柱壳加筋柱壳结构的损耗因子、流体介质、壳体厚度、环肋数目对其声振特性的影响。结果表明，流体介质的存在使结构振动减小，辐射声压增加；损耗因子增加，振动和辐射声压在中高频段降低；壳体厚度增大，壳体的振动响应减小，低频段辐射声压降低，高频段辐射声压交叉波动；环肋数目增加，结构振动减小，在中高频段，辐射声压降低。
Base on transfer matrix method, a solution of vibration and acoustic radiation of variable cross-section stiffened cylindrical shell in water under concentrated force and sound pressure was given. After availability of module truncation algorithm was confirmed, the research on vibration and acoustic radiation of the structure was carried out. The influence on vibration and acoustic radiation of the ring plate-cylindrical shell stiffened cylindrical shell structure was analyzed when the dissipation factor, fluid medium, shell thickness and number of ring stiffeners of the structure were changed. The results shown that the structural vibration was reduced and acoustic radiation pressure was increased when the fluid medium was existed; the vibration and acoustic radiation pressure were reduced at medium-high frequencies when the dissipation factor was increased; the vibration response of the shell was reduced with the thickness increased, and acoustic radiation pressure was reduced at the low frequencies, acoustic radiation pressure was cross fluctuations at high frequencies; the structure vibration was reduced with the ring stiffener number increased and the acoustic radiation pressure was reduced at high frequencies.
2016,38(8): 29-33 收稿日期：2016-2-2
DOI：10.3404/j.issn.1672-7619.2016.08.006
分类号：TB532
作者简介：王宏(1973-),男,博士,副教授,主要从事船舶与海洋结构物性能与安全方面研究。
参考文献：
[1] 谢官模. 环肋圆柱壳在流场中的动力响应和声辐射[D]. 武汉: 华中理工大学, 1994. XIE Guan-mo. Dynamic response and acoustic radiation of a ring stiffened cylindrical shell in fluid field[D]. Wuhan: Huazhong University of Science and Technology, 1994.
[2] 陈越澎, 骆东平, 陈晓宁, 等. 流场中双层壳体结构振动特性研究[J]. 华中理工大学学报, 1999, 27(1): 72-73. CHEN Yue-peng, LUO Dong-ping, CHEN Xiao-ning, et al. A study of the characteristics of vibration in a double shell in a fluid field[J]. Journal of Huazhong University of Science and Technology, 1999, 27(1): 72-73.
[3] 曹雄涛, 华宏星. 流体作用下正交各向异性圆锥壳的自由振动[J]. 振动与冲击, 2011, 30(11): 95-100. CAO Xiong-tao, HUA Hong-xing. Free vibration of orthotropic conical shell interacting with fluid[J]. Journal of Vibration and Shock, 2011, 30(11): 95-100.
[4] GUO Y P. Fluid-loading effects on waves on conical shells[J]. Journal of the Acoustical Society of America, 1995, 92(2): 1061-1066.
[5] 王宏, 刘贤贺, 徐伟. 变截面加筋柱壳结构振动特性分析[J]. 舰船科学技术, 2015, 37(8): 35-39, 44. WANG Hong, LIU Xian-he, XU Wei. Analysis of vibration characteristics of variable cross-section stiffened cylindrical shell[J]. Ship Science and Technology, 2015, 37(8): 35-39, 44.
[6] 曹雷, 马运义, 黄玉盈. 基于Riccati传递矩阵法分析水下有限 长环肋圆柱壳的声辐射性能[J]. 振动与冲击, 2009, 28(9): 149-154. CAO Lei, MA Yun-yi, HUANG Yu-ying. Analysis of acoustic radiation of a ring-stiffened cylindrical shell with finite length in underwater based on Riccati transfer matrix method[J]. Journal of Vibration and Shock, 2009, 28(9): 149-154.
[7] KOOPMANN G H, SONG L M, FAHNLINE J B. A method for computing acoustic fields based on the principle of wave superposition [J]. Journal of the acoustical society of America, 1989, 86(6): 2433-2438.
[8] 钟万勰. 结构动力方程的精细时程积分法[J]. 大连理工大学学报, 1994, 34(2): 131-136. ZHONG Wan-xie. On precise time-integration method for structural dynamics[J]. Journal of Dalian University of Technology, 1994, 34(2): 131-136.
